.tab1
  {
  border-collapse:collapse;
  border: 1px solid black;
  width:70%;
  margin:10px;
  text-align:center;
  }
 
 .tab1 tr{
	border-collapse:collapse;
	border: 1px solid black;
 }
  .tab1 td{
	border-collapse:collapse;
	border: 1px solid black;
	height:30px;
 }

